Question: 3. (1.5 3 = 4.5 points) Find these values. a) 4.7 + 0.6 b) 4.7 0.6 c) 7/3 + 7/3 + 4/3 5. (3 2

3. (1.5 3 = 4.5 points) Find these values.

a) 4.7 + 0.6

b) 4.7 0.6

c) 7/3 + 7/3 + 4/3

5. (3 2 = 6 points) Determine whether each of these functions from Z Z to Z is onto (i.e. surjective). Justify your answer.

a) f(x, y) = 2x y

b) f(x, y) = y2 4

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